Green Home Certifications

Four Walls, Inc. maintains numerous certifications, which provide us with the skills and knowledge to perform whole-building energy assessments for residential, commercial and multifamily buildings. Our energy assessors and verifiers stay up-to-date on the latest energy code updates and innovations in building science.

BPI Building Analyst – As a certified BPI Building Analyst, Four Walls, Inc. performs comprehensive, whole-home energy assessments to ensure the safety and durability of buildings. When we perform a building audit, we assess things such as whole-building ventilation, airflow, gas lines and HVAC systems. Applying our extensive knowledge of building science, we identify problems and prescribe and prioritize solutions that lead to higher performing buildings.

BPI Envelope Professional — As a certified BPI Envelope Professional, we have the ability to optimize and verify the installation, operation, maintenance and performance of building envelope systems. After testing a building envelope, we can prescribe improvements to tighten the building envelope, stop air leakage, and optimize comfort, durability and HVAC performance.

Performance Tested Comfort Systems® — This training allows us to test a building’s HVAC system to ensure that ducts are properly sealed and high-efficiency heat pumps are properly installed.

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Ron Nardozza, Owner

If you're a home builder, architect, real estate developer, engineer or realtor serving clients in the Pacific Northwest, please get in touch to let us know how we can be of service with your next energy-efficiency project. We look forward to hearing from you.